i have done some testing on ram recently. the first thing i noticed is ANY ram at the same timings, same fsb, same ratio with the rest of the components exactly the same, will perofrom exactly the same, apart from small random variances which always happen when testing
i shared the same opinion about tighter timings not being worth the money, i still do, ram is atm, stupidly priced. the reson for the price is noone makes ram modules faster than pc3200 (i trust directhex not to have lied about that!), so all of the faster chips are just overclocked pc3200 ram. the difference between it and the pc3200 is that its guaranteed to run at that speed.
the market pushing ram speeds faster is and has always been p4 processors, due to not having adjustable multiplyers. that is where fast ram is needed, and p4 can take good advantage of it aswell unlike amd cpus, so its not a huuuge waste...
my ram:
£65 - 256mb pc2700 samsung original (DLT chips) - 143mhz max 6-2-2-2. returned to shop.
£65 - 256mb pc2700 samsung original (DLT chips) - 205mhz max 7-3-3-2.5 2.6v. in dads pc.
replacement for above - 256mb pc2700 twinmos w. samsung (CLT chips) - 225mhz+ 7-3-3-2.5 (2.6v!!!). sitting on top of my psu atm
£20 - 256mbpc3200 twinmos w. mtec - 225mhz+ 7-3-3-2.5 2.6v. also sitting atop my psu
£70 - 512mb pc3500 corsair cas2 - 200fsb 2-2-2-12 2.7v. cam etoday in post, runing in my mobo now
£70 - 512mb pc3500 corsair cas2 - 200fsb 2-2-2-12 2.7v. cam etoday in post, runing in my mobo now
the 2 sticks of corsair cost me £140 inc second hand. i thought this is quite good, £70 per stick. it would have cost atleast £90 new. i intend to sell 2 of the other sticks for about £70.
currently my mobo (nf7-s rev2 chipset voltage = 1.7) cant do more than 200fsb at 2-2-2-12, while it was able to do 225fsb at 2.5-3-3-7. i intend to volt mod it to allow faster fsb at 2-2-2-12 timings. for those that say it makes little or no difference, here is soem benchmark results from 3dm2k1:
r9700np - core 446.40 mem 311.40 3dm2k1 = 17412 - 2.2ghz cpu 200fsb cl2.5-3-3-7
r9700np - core 446.40 mem 311.40 3dm2k1 = 17677 - 2.3ghz cpu 209fsb cl2.5-3-3-7
r9700np - core 446.40 mem 311.40 3dm2k1 = 17744 - 2.2ghz cpu 200fsb cl2-2-2-12
(results may be very different for p4 users that do similar tests!) having 200fsb at 2-2-2-12 clearly beats a cpu clocked 100mhz higher, with 9mhz higher fsb, at 2.5-3-3-7 timings. but imo thats not a fair comparason - the mobo is limiting the ram at 225 for 2.5-3-3-7, or 200 for 2-2-2-12. so we should only compare with the old ram at 225fsb (so we can decide if a higher fsb, or tighter timings, makes the best performance). i however, can not be arsed. i am assuming i wont get this mobo any higher than 250mhz with 2.5-3-3-7 with volt mods, and the old ram (the pc2700 in particular) will need higher voltage, and will get very hot. that leaves voltmoding for 2-2-2-12 at highest speed possible the best chioce.
unfortunatly i havent got any records of benches done at 225fsb - mainly becuase i dont think i tryed getting to windows with it that high. it was only done at that speed on my old nf7-s rev1.1 which i killed by letting the nb overheat (it was watercooled, but very bad contact). if this corsair is capable i may try it later at 225 @ looser timings (2.5-3-3-7, so i can compare with other results)
also i remember reading an article about ram recently. it was very unfairly tested - using p4's for the testing on a cpu sensitive benchmark with different speed fsb. obvisly the stock fsb with low timings would be worse than a p4 overclocked wth higher fsb and resoanbly good timings.
the annoying thing is all the GOOD ram chips are no longer being made - samsung CLT, winind BH-5 etc.. it seems the good chips just cost tooo much to make, if they were still being made then choosing ram would be easy - get the cheapest ram you can find that has the best chips on it. this corsair ram is old so im hoping its BH-5